hrtimer: Add hrtimer support for CLOCK_TAI

Add hrtimer support for CLOCK_TAI, as well as posix timer interfaces.

Signed-off-by: John Stultz <john.stultz@linaro.org>

1 files changed, 13 insertions, 1 deletions

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index cc47812d3feb..258720741d3e 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -83,6 +83,12 @@ DEFINE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases) =
                         .get_time = &ktime_get_boottime,
                         .resolution = KTIME_LOW_RES,
                 },
+                {
+                        .index = HRTIMER_BASE_TAI,
+                        .clockid = CLOCK_TAI,
+                        .get_time = &ktime_get_clocktai,
+                        .resolution = KTIME_LOW_RES,
+                },
         }
 };
 
@@ -90,6 +96,7 @@ static const int hrtimer_clock_to_base_table[MAX_CLOCKS] = {
         [CLOCK_REALTIME]        = HRTIMER_BASE_REALTIME,
         [CLOCK_MONOTONIC]       = HRTIMER_BASE_MONOTONIC,
         [CLOCK_BOOTTIME]        = HRTIMER_BASE_BOOTTIME,
+        [CLOCK_TAI]             = HRTIMER_BASE_TAI,
 };
 
 static inline int hrtimer_clockid_to_base(clockid_t clock_id)
@@ -106,8 +113,10 @@ static void hrtimer_get_softirq_time(struct hrtimer_cpu_base *base)
 {
         ktime_t xtim, mono, boot;
         struct timespec xts, tom, slp;
+        s32 tai_offset;
 
         get_xtime_and_monotonic_and_sleep_offset(&xts, &tom, &slp);
+        tai_offset = timekeeping_get_tai_offset();
 
         xtim = timespec_to_ktime(xts);
         mono = ktime_add(xtim, timespec_to_ktime(tom));
@@ -115,6 +124,8 @@ static void hrtimer_get_softirq_time(struct hrtimer_cpu_base *base)
         base->clock_base[HRTIMER_BASE_REALTIME].softirq_time = xtim;
         base->clock_base[HRTIMER_BASE_MONOTONIC].softirq_time = mono;
         base->clock_base[HRTIMER_BASE_BOOTTIME].softirq_time = boot;
+        base->clock_base[HRTIMER_BASE_TAI].softirq_time =
+                                ktime_add(xtim, ktime_set(tai_offset, 0));
 }
 
 /*
@@ -651,8 +662,9 @@ static inline ktime_t hrtimer_update_base(struct hrtimer_cpu_base *base)
 {
         ktime_t *offs_real = &base->clock_base[HRTIMER_BASE_REALTIME].offset;
         ktime_t *offs_boot = &base->clock_base[HRTIMER_BASE_BOOTTIME].offset;
+        ktime_t *offs_tai = &base->clock_base[HRTIMER_BASE_TAI].offset;
 
-        return ktime_get_update_offsets(offs_real, offs_boot);
+        return ktime_get_update_offsets(offs_real, offs_boot, offs_tai);
 }
 
 /*